Mold for artificial stone.



I A. BRUCKNER. MOLD FOR ARTIFICIAL STONE.

APPLICATION FILED JU LYZBI l9t5.

PatentedJune 6, 1916.

WITNESS:

INVENTOR.

ATTORNEY A. BRUCKNER.

MOLD FORARTIFICIAL STONE. APPLICATION FILED luivzs. 191s.

Patented June 6, 1916.

2 SHEETS-SHEET 2- WITN ESSZ ATTORNEY Tm: COLUMBIA PLANOGRAPIII co., WASHINGTON, a. c.

ALBERT BRUCKNER, or ETNA, PENNSYLVANIA.

MOLD FOR ARTIFICTAL STONE.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed July 28, 1915. Serial No. 42,297.

T 0 all whom it may concern: 7

Be it known that I, ALBERT BRUCKNER, a citizen of the United States, residing at Etna, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Molds for Artificial Stone, of which the following is a specification.

My invention relates to molds for manufacturing artificial stone blocks, having double or parallel walls connected together by metal ties.

It is the object of this invention to pro.- vide an improved apparatus of the collapsible or knock-down type by which such blocks may be made cheaply and rapidly.

Referring to the accompanying drawings, Figure 1 is a plan View of a mold constructed in accordance with my invention for making a corner block; Fig. 2, a vertical section on the line 11-11, Fig. 1; Fig. 3, a side view of one of the sides of the core of the mold; Fig. 4, a perspective view of one of the spacers or separators for the sides of the core; Fig. 5, a plan view of a mold for making straight blocks; Fig. 6, a section on the line VIVI, Fig. 5; Fig. 7, a perspective view of a block made in the mold shown in Figs. 5 and 6; and Fig. 8, a section of a block, the section corresponding to the line IIII, Fig. 1. i

Referring first to Figs. 1 to 4;, 1 and 2 represent the mold sides for shaping the outer surfaces of a corner block, and 3 and 4, the mold sides for shaping the inner faces of a corner block. The sides 1 and -2 are preferably secured together at right angles to each other and constitute the outer side member A of the mold; and the sides 3 and 1 are also preferably secured together at right angles to each other and constitute the inner side member B of the mold. The members A and B are arranged in parallel relation to each other, so as to form between them the mold sides for the inner and outer faces of a corner block. The outer ends of the parallel members land 3 extend into mortises 5 in the closure 6 of one end of the mold and the outer ends of the parallel members 2 and 1 extend into mortises 7 in the closure 8 of the other end of the mold. The sides and ends of the mold may be held in the assembled position shown in various ways, but I have shown the braces 9 ad justably secured to the mold bottom 10 by bolts 11 in the slots 12 in the braces, nuts 13 clamping the braces to the bottom 10. The inner faces of the members A and B are provided with beveled recesses 14 which provide the molded blocks with projecting beveled portions 14 The end member 6 has the recess 15 midway between the sides 1 and 3, and the end member 8 has the recess 16 midway between the sides 2 and 4. 17 and 18 are two members arranged parallel to the sides 1 and 2 and have their meeting ends secured together in any proper manner, as by the pin 19 extending through the hinge-lugs 20 (Fig. 3). The remaining ends of the members 17 and 18 extend into the recesses 15and 16 and rest against the outerwalls' thereof. 21 and 22 are two members similar to the members 17 and 18.- They have their meeting ends secured together by the pin 23 and have their remaining ends resting against the inner walls of the recesses. The members 17 and 18 support projections 24: which face toward the sides 1 and 2 in orderto form recesses 25 in the molded blocks. The members v21 1 and 22 also carry projections 26 which face toward the sides 3 and t in order to form recesses 27 in the blocks. The members 17, 18, 21 and 22 are each divided longitudinally into upper sections a and lower sections I) (Fig. 2). The sections a have open slots 28 on their upperedges to support the metal ties 29, and the sections 6 have open slots 30 in their lower edges to receive the metal ties 31, only one tie being shown, Fig. 2. The

members 17, 18 are held in the spaced position shown by the spacers 32, each comprising a horizontal member 33 and a pair of members 3-1 depending therefrom. The members 33 and 34 are as wide as the space between the parallel members 17 21 and 18, 22. The members 34 extend down between the members 17, 21 and 18, 22 while the members 33 lie between the upper edges of the members 17 21 and 18, 22 and flush therewith. It is seen that my mold has two L-shaped mold spaces C and D, separated by a partition comprising the members 17 18, 21, 22, 33 and 34a. The metal ties have their forked ends projecting into the mold spaces C and D. Cement is poured into the spaces C and D until the spaces are filled. It may be poured over the mold without care as to the partitions since the members 33 prevent any cement from running into the space between the members 17, 21 and 18, After the mold has been filled the cement is scraped oi the top and the block of cement is allowed to set or harden. Then the block is hard enough to stand With its sides unsupported, the sides and ends of the mold are removed. Also the spacers 32 are with-drawn. Then the sections a and b are removed. It is seen that, by having the ties near both edges of the block, the members 17, 18, 21 and 22 should be made in sections in order that they may be removed.

Referring now to Figs. 5, 6 and 7, I show a mold for making a straight block. The parallel, straight sides 1 and 3 are seated in mortises 5 in the ends 6 of the molds. The ends 6 have the recesses 15 to receive the ends of the partition composed of the straight parallel members 17 and 21. and the spacer 3%, comprising the horizontal member 33 and the vertical members 3%. The members 17- and 21 are composed of upper sections a and if, provided with the projections 21 and 26 extending into the mold spaces C and D respectively. 29 and 31 represent metal ties constructed and arranged like the ties 29 and 31. I have shown the ends 6 of indefinite length, so that other blocks can be molded between them beyond the side 1. For the same purpose I have shown the sides 1 and 3, which are interchangeable, with the lateral extensions 35, also shown on Fig. 1, in which the recesses 1 and is are made. The ends 6 have mortises 5 and recesses 15 on both sides so that the mold may be extended endwise as well as sidewise, as shown at the right-hand side of Fig. 5. 10 is the mold bottom.

In Fig. 7, I have shown the block made by the mold shown in Figs. 5 and 6. It comprises the members E and F which were cast (Eagles of this patent may be obtained for live cents each, by addressing the Gommissioner of Patents,.

in the mold spaces G and D connected together by the ties 29 and 31.

I claim:

1. In a mold, a pair of spaced mold sides, closures for bridging the space between the ends of the said mold sides, and a partition arranged parallel with the mold sides and between the same and having its ends in engagement with the said closures, the said partition comprising spaced side members and a removable spacing member to hold the side members at a predetermined distance apart, the said side members having at each edge open slots to receive ties bridging the said side members and having their ends in the spaces between the partition and the mold. sides, and the said side members being divided longitudinally between the ties in the respective notches so as to form separable sections, whereby the said partition may be removed from an article molded in the spaces between the mold side and the said partition.

2. In a mold for corner blocks, parallel L shaped members arranged to shape the opposing sides of a corner block, end closures bridging the spaces between the ends of the L shaped members, an. L shaped partition between the said L shaped members, the said partition comprising spaced L members having notches at both edges, adapted to hold ties, bridging the spaces between the sidemembers and having their ends in the spaces between the partition and the mold sides, each L-shaped member comprising portions detachably connected together at the angle thereof and divided longitudinally between the ties in the notches at the respective edges of the side members.

Signed at Pittsburgh, Pa, this 27th day of July, A. D. 1915.

ALBERT BRUCKNER.

Washington, D. G. 

